fix: Fix issues with AlbumCatalogue

app/src/main/java/com/cappielloantonio/tempo/ui/adapter/AlbumCatalogueAdapter.java

@@ -23,6 +23,8 @@ import java.util.List;
 
 public class AlbumCatalogueAdapter extends RecyclerView.Adapter<AlbumCatalogueAdapter.ViewHolder> implements Filterable {
     private final ClickCallback click;
+    private String currentFilter;
+
     private final Filter filtering = new Filter() {
         @Override
         protected FilterResults performFiltering(CharSequence constraint) {
@@ -32,6 +34,7 @@ public class AlbumCatalogueAdapter extends RecyclerView.Adapter<AlbumCatalogueAd
                 filteredList.addAll(albumsFull);
             } else {
                 String filterPattern = constraint.toString().toLowerCase().trim();
+                currentFilter = filterPattern;
 
                 for (AlbumID3 item : albumsFull) {
                     if (item.getName().toLowerCase().contains(filterPattern)) {
@@ -48,8 +51,7 @@ public class AlbumCatalogueAdapter extends RecyclerView.Adapter<AlbumCatalogueAd
 
         @Override
         protected void publishResults(CharSequence constraint, FilterResults results) {
-            albums.clear();
+            albums = (List) results.values;
-            albums.addAll((List) results.values);
             notifyDataSetChanged();
         }
     };
@@ -60,6 +62,8 @@ public class AlbumCatalogueAdapter extends RecyclerView.Adapter<AlbumCatalogueAd
     public AlbumCatalogueAdapter(ClickCallback click) {
         this.click = click;
         this.albums = Collections.emptyList();
+        this.albumsFull = Collections.emptyList();
+        this.currentFilter = "";
     }
 
     @NonNull
@@ -92,9 +96,8 @@ public class AlbumCatalogueAdapter extends RecyclerView.Adapter<AlbumCatalogueAd
     }
 
     public void setItems(List<AlbumID3> albums) {
-        this.albums = albums;
         this.albumsFull = new ArrayList<>(albums);
-        notifyDataSetChanged();
+        filtering.filter(currentFilter);
     }
 
     @Override

app/src/main/java/com/cappielloantonio/tempo/ui/fragment/AlbumCatalogueFragment.java

@@ -52,6 +52,12 @@ public class AlbumCatalogueFragment extends Fragment implements ClickCallback {
         initData();
     }
 
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        albumCatalogueViewModel.stopLoading();
+    }
+
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         activity = (MainActivity) getActivity();
@@ -73,7 +79,7 @@ public class AlbumCatalogueFragment extends Fragment implements ClickCallback {
 
     private void initData() {
         albumCatalogueViewModel = new ViewModelProvider(requireActivity()).get(AlbumCatalogueViewModel.class);
-        albumCatalogueViewModel.loadAlbums(500);
+        albumCatalogueViewModel.loadAlbums();
     }
 
     private void initAppBar() {

app/src/main/java/com/cappielloantonio/tempo/viewmodel/AlbumCatalogueViewModel.java

@@ -1,6 +1,7 @@
 package com.cappielloantonio.tempo.viewmodel;
 
 import android.app.Application;
+import android.util.Log;
 
 import androidx.annotation.NonNull;
 import androidx.lifecycle.AndroidViewModel;
@@ -22,6 +23,7 @@ public class AlbumCatalogueViewModel extends AndroidViewModel {
     private final MutableLiveData<List<AlbumID3>> albumList = new MutableLiveData<>(new ArrayList<>());
 
     private int page = 0;
+    private Status status = Status.STOPPED;
 
     public AlbumCatalogueViewModel(@NonNull Application application) {
         super(application);
@@ -31,7 +33,19 @@ public class AlbumCatalogueViewModel extends AndroidViewModel {
         return albumList;
     }
 
-    public void loadAlbums(int size) {
+    public void loadAlbums() {
+        page = 0;
+        albumList.setValue(new ArrayList<>());
+        albumList.setValue(new ArrayList<>());
+        status = Status.RUNNING;
+        loadAlbums(500);
+    }
+
+    public void stopLoading() {
+        status = Status.STOPPED;
+    }
+
+    private void loadAlbums(int size) {
         retrieveAlbums(new MediaCallback() {
             @Override
             public void onError(Exception exception) {
@@ -39,9 +53,11 @@ public class AlbumCatalogueViewModel extends AndroidViewModel {
 
             @Override
             public void onLoadMedia(List<?> media) {
-                List<AlbumID3> liveAlbum = albumList.getValue();
+                if (status == Status.STOPPED) {
+                    return;
+                }
 
-                if (liveAlbum == null) liveAlbum = new ArrayList<>();
+                List<AlbumID3> liveAlbum = albumList.getValue();
 
                 liveAlbum.addAll((List<AlbumID3>) media);
                 albumList.setValue(liveAlbum);
@@ -73,4 +89,9 @@ public class AlbumCatalogueViewModel extends AndroidViewModel {
                     }
                 });
     }
+
+    private enum Status {
+        RUNNING,
+        STOPPED
+    }
 }